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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Infineon Technologies TLE4276GVATMA4

Name: TLE4276GVATMA4
Brand: Infineon Technologies
SKU: TLE4276GVATMA4
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TLE4276GVATMA4

Manufacturer:: Infineon Technologies

Category:: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Package:: TO-263-6, D2PAK (5 Leads + Tab), TO-263BA

Datasheet:: TLE4276GVATMA4.pdf

Description:: TLE4276G - OPTIREG LINEAR LOW DR

Quantity:: RFQ Add To RFQ list

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Inventory:212,000

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Product details

Overview

TLE4276GVATMA4 from Infineon is a 5 V fixed-output, automotive-qualified linear voltage regulator in PG-TO263-5 package, delivering up to 400 mA with ≤ ±4% output tolerance, 250–500 mV dropout at 250 mA, and inhibit-controlled shutdown (<10 µA quiescent current). It operates from 6–40 V input and integrates short-circuit, reverse-polarity, and overtemperature protection for engine control units and body electronics.

For engineers reviewing the TLE4276GVATMA4 datasheet, TLE4276GVATMA4 pinout, TLE4276GVATMA4 application, or TLE4276GVATMA4 equivalent, key selection criteria include its AEC-Q100 qualification, thermal resistance (R_thj-c = 4 K/W), adjustable/fixable output variants, and mandatory 22 µF/≤3 Ω ESR output capacitor requirement for stability.

Technical Context

The TLE4276GVATMA4 uses a bandgap-referenced control amplifier driving a series pass transistor with saturation control to prevent oversaturation under load. Its internal protection circuits independently monitor overload, junction temperature (>150 °C shutdown), and reverse polarity (−42 V tolerant).

It features low-noise regulation (54 dB PSRR at 100 Hz), tight line/load regulation (≤25 mV/35 mV), and stable operation across −40 °C to +150 °C junction temperature with R_thj-a = 80 K/W on standard PCB mounting.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	5.0 V ±4% - Ensures stable MCU/Sensor supply within automotive voltage tolerances.
Max Output Current	400 mA - Supports multiple downstream ICs (e.g., CAN transceivers + microcontroller core) without external boost.
Dropout Voltage	250–500 mV @ 250 mA - Enables regulation down to VI = 5.5 V, critical for cold-crank (6.0 V) operation.
Inhibit Current	<10 µA @ VINH = 0 V - Meets automotive standby power budgets for always-on modules.
Thermal Resistance	R_thj-c = 4 K/W - Requires direct heatsink connection via exposed tab for sustained 400 mA at high ambient.
ESD Rating	HBM ±2000 V - Survives handling and board assembly without additional protection circuitry.
Input Voltage Range	6–40 V - Covers full automotive battery range including load dump (40 V transient).

Pinout & Package

PG-TO263-5 package with integrated heatsink tab (pin 5 connected to GND); thermally optimized for surface-mount PCB mounting with copper pour under exposed pad.

Pin/Terminal	Circuit Role	Design Meaning
1 (I)	Input	Primary DC input; requires local 100 nF ceramic capacitor directly to GND for noise suppression.
2 (INH)	Inhibit	Active-low enable; pulls device into ultra-low-power state (<10 µA) when grounded.
3 (GND)	Ground	Power and signal reference; must be low-impedance path to minimize regulation error.
4 (N.C.)	No Connect	Internally unconnected; must remain floating-no external tie or pull-up/down.
5 (Q)	Output	Regulated 5 V output; requires ≥22 µF output capacitor with ESR ≤3 Ω at 10 kHz for loop stability.

Key Features

Feature	Design Value
AEC-Q100 qualified	Validated for automotive Grade 0 (−40 °C to +150 °C), enabling use in powertrain and chassis systems.
Reverse polarity protection	Withstands −42 V input without damage-eliminates need for external series diode in battery-reversal-prone environments.
Short-circuit proof	Current-limited foldback protects against sustained output shorts without latch-up or thermal runaway.
Low quiescent current in inhibit mode	Sub-10 µA shutdown current meets ISO 16750-2 "parking mode" requirements for infotainment and telematics.
Integrated overtemperature shutdown	Automatic recovery after cooldown-avoids permanent disable during transient thermal overload (e.g., high ambient + full load).

Applications

Engine Control Unit (ECU)

Body Control Module (BCM)

Use Scenario: Powers 5 V microcontroller, CAN transceiver, and sensor interface circuitry in under-hood ECUs exposed to 125 °C ambient.

IC Role / Device Role / Timing Role: Primary 5 V system rail regulator with inhibit control synchronized to ignition state.

Use Value: Maintains regulation during cold-crank (6 V) and load dump (40 V), while thermal shutdown prevents failure during prolonged high-temp operation.

Use Scenario: Supplies door module logic, LIN transceivers, and LED drivers in side mirror or seat control units.

IC Role / Device Role / Timing Role: Always-on 5 V regulator with INH tied to vehicle wake-up bus for low-power sleep/wake cycling.

Use Value: Sub-10 µA inhibit current extends battery life in parked state; reverse-polarity tolerance avoids field returns from incorrect battery jump-starts.

Advanced Driver Assistance Systems (ADAS) Camera Module

Electric Power Steering (EPS) Sensor Interface

Use Scenario: Provides clean 5 V bias to image sensor and ISP in compact rear-view camera housings with limited PCB area.

IC Role / Device Role / Timing Role: Compact, heatsink-integrated LDO replacing discrete solutions to meet space-constrained mechanical envelopes.

Use Value: PG-TO263-5's 4 K/W junction-to-case thermal resistance enables 400 mA output without external heatsink in sealed enclosures.

Use Scenario: Regulates 5 V supply for torque and position sensors in EPS motor control assemblies near high-current inverters.

IC Role / Device Role / Timing Role: EMI-robust linear regulator with 54 dB PSRR rejecting switching noise from adjacent 48 V/12 V DC-DC converters.

Use Value: High PSRR and low output noise ensure sensor ADC accuracy remains unaffected by power stage ripple.

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-drop automotive LDO applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
NCP1117ST50T3G	Fixed 5 V, 1 A rated, but only AEC-Q100 Grade 3 (−40 °C to +125 °C); no inhibit input; R_thj-c = 20 K/W.	Lacks inhibit control and fails junction temp margin for under-hood use above 125 °C.	Acceptable only for cabin-grade modules where ambient ≤125 °C and shutdown not required.
TLV73350PDBVR	5 V, 300 mA, 250 mV dropout, but not AEC-Q100 qualified; max input 6.5 V; no reverse-polarity protection.	Unsuitable for 12 V automotive systems due to 6.5 V input limit and lack of automotive qualification.	Restricted to non-automotive industrial or consumer applications with stable 5 V input rails.

Compared with NCP1117ST50T3G and TLV73350PDBVR, the TLE4276GVATMA4 uniquely combines AEC-Q100 Grade 0 rating, inhibit control, reverse-polarity tolerance, and 4 K/W thermal resistance-making it the only viable choice for high-reliability, thermally constrained under-hood 5 V regulation.

Availability

TLE4276GVATMA4 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera systems, and electric power steering sensor interfaces requiring stable component supply across automotive production lifecycles.

Supply support for TLE4276GVATMA4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with leadership in AEC-Q100-qualified analog and power devices.

The OPTIREG™ linear product line delivers robust, thermally efficient LDOs engineered specifically for automotive subsystems demanding high reliability, wide input range, and integrated protection-especially in space- and thermal-constrained locations.

FAQ

What is the minimum input voltage required for regulation at full 400 mA load?

The TLE4276GVATMA4 requires VI ≥ VQ + 0.5 V = 5.5 V to maintain regulation at 400 mA, per datasheet Table 4. At cold-crank conditions (6.0 V), it sustains output with <500 mV dropout. Below 5.5 V, output collapses linearly with input.

Can the INH pin be left unconnected, or does it require a defined logic level?

The INH pin must never float: it is active-low and internally pulled up. Leaving it open risks unintended shutdown due to noise coupling. For always-on operation, tie INH to VI through a 10 kΩ resistor; for controlled shutdown, drive it actively to GND.

Is the exposed tab (pin 5) electrically connected, and how must it be handled on the PCB?

Yes-the exposed tab is internally connected to GND and serves as the primary thermal path. It must be soldered to a large GND copper pour (≥80 × 80 mm, 35 µm Cu) with ≥4 thermal vias to inner GND planes. No isolation or silkscreen over the tab is permitted.

Does the TLE4276GVATMA4 support adjustable output voltage, or is it fixed at 5 V only?

TLE4276GVATMA4 is the fixed 5 V version (V50 marking). Adjustable variants (e.g., TLE4276GV) exist but use different pin 4 functionality (VA input) and require external resistive divider. This part has pin 4 marked N.C. and cannot be adjusted.

TLE4276GVATMA4 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: OPTIREG™

Package/Case:: TO-263-6, D2PAK (5 Leads + Tab), TO-263BA

Packaging:: Bulk

Product Status:: Active

Output Configuration:: Positive

Output Type:: Adjustable

Number of Regulators:: 1

Voltage - Input (Max):: 40V

Voltage - Output (Min/Fixed):: 2.5V

Voltage - Output (Max):: 20V

Voltage Dropout (Max):: 0.5V @ 250mA

Current - Output:: 400mA

Current - Quiescent (Iq):: 200 µA

Current - Supply (Max):: 25 mA

PSRR:: 54dB (100Hz)

Control Features:: Inhibit

Protection Features:: Over Current, Over Temperature, Reverse Polarity, Short Circuit

Operating Temperature:: -40°C ~ 150°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PG-TO263-5-1

TLE4276GVATMA4 FAQ

1.How can I place an order for TLE4276GVATMA4 through Aetrix?

Please submit a Request for Quotation (RFQ) for TLE4276GVATMA4 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for TLE4276GVATMA4 reliable?

The price and inventory of TLE4276GVATMA4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4276GVATMA4 is usually 5 days.

3.What payment methods are accepted for TLE4276GVATMA4?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4276GVATMA4 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLE4276GVATMA4?

TLE4276GVATMA4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLE4276GVATMA4 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for TLE4276GVATMA4?

For technical support, including TLE4276GVATMA4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4276GVATMA4 requirements.

6.How does Aetrix verify that TLE4276GVATMA4 is sourced from the original manufacturer or authorized distributors?

All TLE4276GVATMA4 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TLE4276GVATMA4 meets industry standards.

7.What is the process for return or replacement of TLE4276GVATMA4?

All TLE4276GVATMA4 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4276GVATMA4, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The TLE4276GVATMA4 part is unused and in its original packaging.

Return procedure for TLE4276GVATMA4:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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